Boiler.



E. C. MEIER.

BOILER. 1920,11 APPLICATION FILED APR. 30. 1915. Patented Dec. 19,1916.

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Specification of Letters Patent.

Patented Dec. 19, 1916.

Application filed A ril 30, 1915. Serial No. 24,899.

To all whom it may concern:

' Be it known that I, EDWARD C. MEIER, a citizen of, the United States,residing at Phoenixville, in the county of Chester and State ofPennsylvania, have invented certain new and useful Improvements inBoilers, of which the following is a specification.

My invention relates to improvements in boilers, the object of theinvention being to provide an improved construction of boiler in whichthe several parts are welded together, reducing the use of rivets to aminimum in the boiler construction.

- proved boiler in which the waterlegsor boxes are constructed of aplurality of parts securely welded together and dispensing with the useof rivets as connecting means.

A further object is to provide a boiler which; is of simple inexpensiveconstruction, and which is capableof withstanding the maximum ofinternal pressure.

With these and other objects in view, the invention consists in certainnovel features of construction and combinations and arrangements ofparts as will be more fully hereinafter described and pointed out in theclaims.

In the accompanying drawings: Figure 1 is a view in end elevationillustrating my improvements in connection with a battery of boilers.Fig. 2 is a fragmentary view in section on an enlarged scale on the line29, of Fig. 1. Fig. 3 is a view in longitudinal section on the line 33of Fig. 1, the accumulating tank'being omitted, and

Fig. 4 is a fragmentary view illustrating a.

modification.

1, 1, represent the waterboxes or legs of a boiler connected by acylinder 2, and by water tubes 3. The outer sheet 4: and the inner sheet5 of the; boxes 1 are connected by a welded joint 6,which constructionforms the subject matter of an application for patent executed on evendate herewith, and which therefore need not be described more in detailin the present application. The sheets 4 of both boxes 1, are providedwith openings 7 in line with openings 8 in sheets 5. Heads 9 areprojected through the openings 7 and haveannular flanges 10 at theirinner edges welded to the sheets 4. Nipples 11 are projected through theopenings 8, and have annular fl es l2 we d d t th i er fece of describedwithout departing from my sheets 5. The boiler casing 2 is secured tothe nipples 11 in any approved manner, but I have shown ordinary rivets18 for the purpose.

Stay bolts 14 extend through the sheets 4: and5 of boxes 1, and alsothrough the flanges 10 and 12 of heads 9 and nipple 11 respectively. Asabove stated, the parts of the boxes 1 are welded together. The heads 9are welded to the sheets 4:, and the nipples 11 are welded to the sheets5, so that the boxes are constructed entirely without employing ordinaryrivets, and while I have shown rivets connecting the casing 2 with thenipples 11, it is to' be understood that this particular form ofconnection is im material as my invention resides more par ticularly tothe construction of box or waterlegs and the casing 2 may be connectedin any approved manner.

In Fig. 1, I illustrate in end elevation a battery of boilers in which asteam collecting tank 15 is provided above the boxes 1, and said boxesare connected by couplings 16. One of these couplings is shown in detailin Fig. 2,'in which it will be noted that the coupling is provided withoppositely screw-threaded ends engaging in threaded openings 17 in theboxes, and is provided between its ends with a wrench receiving angularportion 18 to rigidly couple the boxes together, and insure a freeflowof water from one box to the other, preventing any possibility ofthe filling of one box without the other.

Fig. 4 illustrates a modification in which the sheets 4 and 5 areprovided with outwardly projecting flanges 19 around its openings 7 and20 respectively, so as to further strengthen the juncture with the head9 and nipple 11. In this construction, the welding point 20 is at theouter end of the flange 19, and not at the wall of the openm s.

In all places I have indicated the weld by the numeral 20, and as thedrawings are on an extremely small scale, the welding material isexaggerated, but it is to be understood that I shall preferably weld atthe points indicated by the numeral 20.

Various slight changes might be made in the general form and arrangementof parts 1nvention, and hence I do not limit myself to the precisedetails set forth, but consider myself at liberty to make such changesand alterations as fairly fall withinthe spirit and scope of theappended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a boiler, the combination with two water legs, both water legshavingregistering openings in their inner and outer sheets, headsprojected through the openings in the outer water leg sheets, said headshaving outwardly disposed iflanges located against the inner faces ofthe outer water le sheets, nipples projecting through the openings. inthe inner water leg sheets and having flanges at their inner ends, acasing secured at its ends to the respective nipples, a plurality ofstay bolts projected through both sheets of both water legs, and throughthe internal flanges of theheads and the nipples, substantially asdescribed.

2. In a boiler, thecolnbination with two water legs, both water legshaving registering openings in their inner and outer sheets, headsprojected through the openings in the outer water leg sheets, said headshaving outwardly disposed annular flanges located against the innerfaces of the outer water leg sheets, nipples, projecting through theopenings in the inner water leg sheets and having annular flanges attheir inner ends, an elongated casing having its ends located inside ofand secured to the respective nipples, a plurality of stay boltsarranged in annular formation and projected through both sheets of bothwater legs and through the flanges of the'heads and the nipples,substantially as described.

A boiler, comprising two boxes, said boxes having openings in theirinner and outer sheets, heads projected through the openings in theouter sheets, and having outwardly disposed projecting flanges at theirinner portionsvwelded to the'inner faces of the outer sheets, nipplesprojecting through the openings in the inner sheets and having outwardlydisposed projecting flanges welded to the inner faces of the innersheets, a casing-connecting the nipples, and stay bolts projectingthrough the front and rear sheets and through the flanges of the headsand nipples, substantially as described. In testimony whereof I havesigned my name to this specification in the presence of two subscribingwitnesses.

EDWARD C. MEIER. Witnesses: v i

M. EDWIN J I'IEILMAN, S. W. FOSTER.

Gopies of this patent may be obtained for five cents each, by addressingthe "Gomm1ss1 oner of Patents, 7 Washington, D. G. I

